Base (Toon)

Weight

The base color weight.


0	0.5	1

Surface Normal Direction

When rendering diffuse surfaces, it is very important that the normals of the geometry face in the right direction. In the example below, you can see the difference between normals that are facing inwards in the wrong direction (left side) versus those that are facing correctly in the outwards direction (right side).

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Color

The base_color sets how bright the surface is when lit directly with a white light source (intensity at 100%). It defines which percentage for each component of the RGB spectrum does not get absorbed when light scatters beneath the surface. Metal normally has a black or very dark base color, however, rusty metal's need some base color. A base_color map is usually required.


Red	Green	Blue

^{_{Diffuse file texture -> base_color}}

Tonemap

Connect a ramp node here to create a cell look (regarded as a tone map).

^{_{Directional lighting (rollover image for skydome lighting)}}

Note that the appearance of the base_tonemap (using a ramp) appears very different with a directional lighting (hard gradation, below center image) compared to that of a skydome light (soft gradation, below right image).


No ramp (Base Color only)	Ramp -> Tonemap (directional lighting)	Same Ramp -> Tonemap (skydome lighting)

Adjusting light exposure will have an effect on the base_tonemap.


Light Exposure: 2	Light Exposure: 3

The base_tonemap has a multiplier effect on the base_color. The direct diffuse of the base_tonemap is mapped onto the UVs and then the ramp is evaluated.